doc.: IEEE 802. 15-09-0003-00-0006

Submission

S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)

<January 2009>

Slide 1

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Submission Title: [WBAN = Mobile Femto-cell]Date Submitted: [5 January 2009]Source: [S.M. Ryu, D.Y. Kim, C.S. Eun, & H.S. Lee] Company [Casuh, Chungnam Univ., ETRI]Address [#813 Leaders B/D, 342-1, Bundang, Seongnam, Kyeonggi, 463-828, Korea]Voice: [+82-31-709-5577, +82-42-821-6862], FAX: [+82-31-709-5578, +82-42-823-5586]E-Mail:[retaw@casuh.com, dykim@cnu.kr, hsulee@etri.re.kr]

Re: [Contribution to IEEE 802.15.6 Meeting, January 2009]

Abstract: [In the future, WBAN and 5G communication system would not be separated systems. To increase mobile channel capacity, it is inevitable to reduce cell size. If we reduce cell size to 3m radius femto-cell, then the base station becomes a body coordinator. Therefore we should consider 5G communication phenomena during considering WBAN standard.]

Purpose: [Proposal]

Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.

Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15.

doc.: IEEE 802. 15-09-0003-00-0006

Submission

S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)

<January 2009>

January 2009

S. M. RyuCASUH

D. Y. Kim, C.S. EunCNU

H. S. LeeETRI

WBAN = Mobile Femto-cell

In the future, WBAN and 5G communication system would not be separated systems. To increase mobile channel capacity, it is inevitable to reduce cell size. If we reduce cell size to 3m radius femto-cell, then the base station becomes a body coordinator. Therefore we should consider 5G communication phenomena during considering WBAN standard.

doc.: IEEE 802. 15-09-0003-00-0006

Submission

S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)

<January 2009>

Slide 3

How to increase mobile channel capacity ?

Macro Micro Pico Femto

Capacity 1 100 10,000 Low PowerPersonal Space

MobilityTx Power 1 1/1,000 1/1,000,000

3Km

Macro

.

300m

Micro30m

Pico Femto3m

Ubiquitous World Personal Mobile Space (WBAN)

Find new frequencies not developed yet ; no more available Find new signal processing technique's ; only few times increasable But we need few hundreds times capacity or more The only way to achieve few thousand times capacity ; reduce cell size

doc.: IEEE 802. 15-09-0003-00-0006

Submission

S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)

<January 2009>

Slide 4

Body Coordinator Mobile Femto-cell

Body Master

Body coordinator is not a sufficing concept. Synchronous frames can reject mutual interference among RF’s . So, Body coordinator should synchronize all of body device’s.

Better to rename body coordinator as “Body Master”.

doc.: IEEE 802. 15-09-0003-00-0006

Submission

S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)

<January 2009>

Slide 5

S

S

S

S

M

S

S

S

S

M

Body Master Operation

doc.: IEEE 802. 15-09-0003-00-0006

Submission

S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)

<January 2009>

Slide 6

Power Shift by Generation

Consumer=Producer

Homemade Products

ProductAds

Producer

Industry Revolution

Consumer

distributordistributor

Consumer

GoverningSpace

Producer

ConsumerRevolution

User

internet

distributor

Producer

Internet

Internet

User

distributor

Producer

Private Ads Google

PicoCast

broadcasting

broadcasting

The market of Google is effective only when customer exists in front of the monitor

What will be the next Google market ???

doc.: IEEE 802. 15-09-0003-00-0006

Submission

S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)

<January 2009>

Slide 7

Paradigm Change : User Oriented

User terminals should meetprovider specifications

Mobile Phone

WiBro

IPTV

RFIDUSN

DMB

MobileVoIP

u-City

HomeNetwork

Infra

Ubiquitous

WiBro

IPTV

RFIDUSN

MobilePhoneDMB

MobileVoIP

HomeNetwork

u-City

Users select among servicesbroadcast by providers

Provider Oriented User Oriented

doc.: IEEE 802. 15-09-0003-00-0006

Submission

S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)

<January 2009>

Slide 8

Internet

Internet

Mobile

Wired

Broad-casting

Market Initiative WBAN

Wired

Wired

Broad-casting

WBAN

Mobile

Mobile

Wired

Broad-casting

WLAN

FemtoIPTV

User oriented Ubiquitous : Mobile Femto-cell

Mobile Internet

Mobile VoIP

Wired

MobileBroad-casting

Internet

WLAN

FemtoIPTV

Home

Appliance

Mobile VoIP

Mobile Femto-cell

doc.: IEEE 802. 15-09-0003-00-0006

Submission

S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)

<January 2009>

Slide 9

Mobile Femto-cell = Body Master

?Mobile Femto-cell =User Oriented Service Convergence

Mobile Phone

Wired

PC

IPTV

Home Appliance

Body Master

doc.: IEEE 802. 15-09-0003-00-0006

Submission

S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)

<January 2009>

Slide 10

Body Master Mobility

C

A

B

e

d

fb

c

a

S

g

h

To reduce mutual interference, mutual synchronization is necessary

doc.: IEEE 802. 15-09-0003-00-0006

Submission

S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)

<January 2009>

Slide 11

2.4GHz

~Mbps

UWB

~10Mbps

400MHz

~ KbpsPHY

MAC

APPMedical

Very high QoS

Non-medical High Speed

Full Single MAC

Hybrid Dual MAC

Arrange Requirements List up user requirements Check realizability If no, reduce requirements

Challenges & Opportunities In-body / Out-body Interference Multiple MAC or Single MAC ? Compromise power & speed Medical / Non-medical support

Add process gain for medical use ?

Independent Multiple MAC

Choose existing technique Select good chip Enhance antenna matching Reduce system size & Good design

Issues in WBAN Work Scope

doc.: IEEE 802. 15-09-0003-00-0006

Submission

S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)

<January 2009>

Slide 12

Solutions for Challenges

1. In-body / Out-body Interference Chg. : Even though difference frequency band interfere each

other Sol. : Synchronized Frame can reject mutual interference

among PHY’s 128bit multi preamble is necessary to enhance sync.

probability 2. Single MAC to support Multi-PHY’s Chg. : Single PHY cannot meet so wide user requirements Sol. : Multi preamble is useful to support scalable data rate Synchronized Frame can support different PHY’s

without interference

3. Compromise Power & Speed Chg. : Low power sensor and High speed multimedia should

supported Sol. : Multi PHY concept can support Multi RF Block

Sensor use single RF Block, Multimedia use multi RF Block’s

4. Medical / Non-Medical Dual support

Chg. : Medica needs 10-10 BER performance with low speed

Sol. : 128bit Multi preamble provides enough Process Gain

doc.: IEEE 802. 15-08-0485-01-0006

Submission

<July 2008>

H.S.Lee(ETRI) ,D.Y.Kim (Chungnam Univ.), & S.M.Ryu(Casuh)Slide 13

How to avoid mutual interference

I0

I1

I2

I3

O1

O2

R

R

T

T

T

R

T R

R

T

T

R

R

R

T

Unified Frame

R

R

R

R

T

T

T

T

R

R

T

T

R

R

R

T

T

R

R

T

T

T

T R

R

doc.: IEEE 802. 15-09-0003-00-0006

Submission

S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)

<January 2009>

Slide 14

Multiple Preamble Concept

Lock time Message EOF

Fixed

Header

VariableMultiple

Lock time MessagePreamble EOFHeader

Conventional Frame Structure

Suggested Frame Structure

Sync Aide

Sync Aide& Command

Multiple Preamble contains short message

Preamble

doc.: IEEE 802. 15-09-0003-00-0006

Submission

S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)

<January 2009>

Slide 15

70 80 90 100 110 12010

-12

10-10

10-8

10-6

10-4

10-2

100

Threshold

Mis

sed

Det

ecti

on a

nd F

alse

Ala

rm P

roba

bili

ty

-3 dB

-2 dB

-1 dB

0 dB

1 dB

2 dB

3 dB

4 dB

5 dB

6 dB

7 dB

8 dB

9 dB

10 dB

false alarm

False Alarm & False Dismissal Probability for WBAN

64bit is not enough but 128 bit is too high ; so we suggest multi Preamble

doc.: IEEE 802. 15-09-0003-00-0006

Submission

S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)

<January 2009>

Slide 16

Process Gain for Medical Use

~7dB

Non-Medical

Medical

Spread Spectrum

Block~14dB

Medical~Kbps

Non-Medical100Kbps

Environment SNR might be under the 0 dB

doc.: IEEE 802. 15-09-0003-00-0006

Submission

S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)

<January 2009>

Slide 17

Single Baseband for Multi PHY(RF) Concept

RF #1f1

RF #2f2

RF #3f3

RF #4f4

RFcombiner

4M

4M

4M

4M

Mux/Demux

12Mbps

32MHz

FrameFormat

16M

• Frequency Diversity• High speed Tx with narrow band RF

doc.: IEEE 802. 15-09-0003-00-0006

Submission

S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)

<January 2009>

Slide 18

TestPath

DiversityMode

Diversity Number

1 2 3 4 5

Case A

Mode 1 5390 / 646 1563 / 29 667 / 3 282 / 0 210 / 0

Mode 2 3123 / 602 2293 / 316 2022 / 253 1874 / 230 1758 / 214

Mode 3 4506 / 1096 3258 / 902 2868 / 848 2666 / 825 2541 / 811

Case B

Mode 1 2700 / 329 106 / 2 9 / 0 1 / 0 0 / 0

Mode 2 3601 / 601 2487 / 303 2136 / 254 1945 / 237 1816 / 229

Mode 3 2361 / 422 1706 / 185 1457 / 135 1310 / 125 1215 / 111

Case C

Mode 1 8264 / 1272 3545 / 101 1536 / 8 637 / 0 480 / 0

Mode 2 4648 / 724 3416 / 424 2976 / 363 2750 / 332 2580 / 309

Mode 3 5640 / 961 4287 / 614 3749 / 514 3461 / 460 3280 / 418

Frame Error Rate & Sync Loss Table

# of frame error / # of Sync loss

doc.: IEEE 802. 15-09-0003-00-0006

Submission

S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)

<January 2009>

Slide 19

Frame Structure example for scalable data rate

Lock Preamble Tag AA Payload EOF

1Mbps 250K ~ 4Mbps

250μsec 128μsec 64μ 1500μsec 50μ

2msec

8μ

Overhead : Payload = 1 : 3

Payload Data Speed = 750Kbps ; 1MHz clock

750K / 1M1.5M / 2M 3M / 4M 6M / 8M 12M / 16M

Basic data rate Scalable data rate

doc.: IEEE 802. 15-09-0003-00-0006

Submission

S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)

<January 2009>

Slide 20

Additional Considerations for WBAN

30m

Pico

Femto

3m

• Power Control• Fast paring• Mutual Sync.• Role Exchange• QoS Check• Emergency Alarm• Hand-over

Through Body 3m = Forward Body 30m

doc.: IEEE 802. 15-09-0003-00-0006

Submission

S.M.Ryu(Casuh),D.Y.Kim (Chungnam Univ.), & H.S.Lee(ETRI)

<January 2009>

Slide 21

Conclusion WBAN body master will work like a mobile femto-cell.

Increasing mobile channel capacity will reduce the cell size as small as possible Mutual interference among Body’s must be solved.

Additional WBAN conditions should be considered for future market. How to minimize the mutual interference among the crowded moving body’s ? How to minimize initial sync time & how to maintain synchronized status ? Who will be the super master and govern areal body’s ?

The WBAN standard should includes items as follows ; Interference cancelling in-body, on-body, out-body, & among-body Single MAC to support multi PHY for wide user requirements Compromise conflicting items (power & high speed; medical & nonmedical)

New suggestions are submitted for chaos WBAN standard Synchronous frame to reject interference in-, on-, out-, & among Body’s Multi preamble to enhance synchronization probability & for special purposes Multi RF & frame structure to compromise conflicting items